Rename app.vcproj to app_base.vcproj to match what is generated by app.gyp.
Rename app.vcproj to app_base.vcproj to match what is generated
by app.gyp.

This wasn't really a problem because Visual Studio looks at guids.

Review URL: http://codereview.chromium.org/113561

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@16347 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser